tree a6c9621d3067eebc17c2ce53fa45e7513ee832a6
parent 08b633070ad5fa17a837428a601c32cf3db6aafd
author Jiri Kosina <jkosina@suse.cz> 1196295723 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1196357094 -0800

RTC: convert mutex to bitfield

RTC code is using mutex to assure exclusive access to /dev/rtc.  This is
however wrong usage, as it leaves the mutex locked when returning into
userspace, which is unacceptable.

Convert rtc->char_lock into bit operation.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Acked-by: Alessandro Zummo <a.zummo@towertech.it>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>